✓ Open
July 10, 2020
Orders may be delayed slightly, but we are working safely to get you your orders asap.
$2 for each item +
per order
An "order" can have multiple items.
Currency is in USD.
We ship to all APO and FPO military addresses.
  • Super-Soft feel
  • Double-needle bottom hem & sleeves
  • Shoulder-to-shoulder tape and seamed collar
  • Preshrunk
Size Width (in.) Length (in.)
Small 18 28
Medium 20 29
Large 22 30.5
XL 24 31.5
2XL 26 32.5
3XL 28 33.5
Thermoquad T-shirt - Smog Gray Edition

This is a Special "Smog Gray" Edition of the beloved Thermoquad! shirt.

THERMOQUAD! It’s the only carburetor that punishes you for going to wide-open throttle, and the world’s most comedic four-barrel. Now, it’s also a DF t-shirt you can wear to show your love or distain (you decide) for this cult-classic implement of fuel delivery!

My cry of “Thermoquad!” began in the ‘80s — long before I made the Thermoquad the butt of all jokes on video — back when we’d hunt speed parts in the junkyard. The Carter Thermoquad is a spread-bore four-barrel that was introduced in 1971 and used through the early ‘80s mostly on Mopar cars and trucks. They had CFM ratings of 850 and 1,000, and were available in performance or smog-friendly configurations, but the claim to fame was the main body made of phenolic resin — plastic!

In tribute to this fine carburetor, I present the Thermoquad! t-shirt with artwork from our friend @STC_Doodles on Instagram. This fresh apparel comes in black 100% soft cotton with the small DF logo on the rear neckline.

$24.99 each
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